Bee Products Research Articles

THE CONTENT OF HEAVY METALS IN HONEY AS INDICATORS OF POLLUTANTS

Honey and honeydew are natural foods with a very complex composition that contain both, organic and inorganic ingredients. Regardless of the progress of the industry, it can't be replaced by some production process.The quality of honey varies from year to year, and bees can never produce the same honey and honeydew. Weather conditions, grazing, treatment of bees, proximity to industry, roads, etc., greatly affect the quality of the obtained honey. Although minerals and heavy metals are minor constituents of honey, they play a vital role in determining its quality.The goal of the research is to assess the qualitative status of honey based on the content of contaminants, heavy metals from the area of the Tuzla Canton.The research was conducted on 30 (thirty) honey samples. The samples were collected in the period September/October 2022 and constitute the grazing of the specified year.In the samples that were the subject of research, As and Cd did not exceed the limit of quantification (LOQ = 0.009 mg/kg). Current regulations does not define MRL’s for these two metals. As for the quantified amount of lead (Pb), it was the same in 12 samples and in 11 samples there was an evident deviation from the MRL. The measured lead (Pb), values range from 0.06 to 5.34 mg/kg.The quality of bee products from the aspect of contamination with heavy metals can serve as bioindicator of environmental pollution, that is, as an indicator of the level of good beekeeping practices. KEYWORDS:honey; honeydew; heavy metals; Tuzla canton

Anti –Inflammatory Activity of Propolis Trigona sp. Water Extract from North Lombok with Red Blood Cell Membrane Stability Method

Propolis is a bee product that can be used as an anti-inflammatory. Cultivation of propolis-producing bees is also carried out in North Lombok. However, propolis has not been utilized optimally by the people of North Lombok. Apart from that, testing of North Lombok propolis is still limited to the chemical content and antioxidant activity of propolis extracted with ethanol solvent. Therefore, this study aims to determine the activity and effective concentration of North Lombok propolis water extract as an anti-inflammatory using the red blood cell membrane stability method. Groups include control groups such as positive control (diclofenac sodium), negative control (distilled water), and test groups (propolis water extract concentrations of 10%, 12.5%, 15%, 17.5%, 20%, 22.5%, 25%, 27.5%, and 30%). In The first step human blood was centrifuged of human blood, and then part of the red blood cells (sediment) was taken and saline was added to obtain a red blood cell suspension. Next, mixing the test solution was carried out in the order of 0.5 ml of red blood cell suspension, then 0.5 ml of extract was added (0.1% w/v Na-diclofenac solution in the positive control, distilled water in the negative control), 1 mL of buffer solution and 2 mL of hyposaline solution, then homogenized. Each group was incubated at 37°C for 30 minutes, then centrifuged for 10 minutes at 3000 rpm. The supernatant was taken, and the absorbance was read with a UV-Vis spectrophotometer at 560 nm. Next, the percentage value of red blood cell hemolysis protection was calculated. The data obtained were tested statistically using One-way ANOVA and post-hoc (LSD) tests SPSS version 29. The results showed that propolis water extract concentrations were 10%, 12.5%, 15%, 17.5%, 20%, 22.5%, 25%, 27.5%, and 30% have anti-inflammatory activity because they can increase the stability of the red blood cell membrane with a percentage of hemolysis protection of respectively 57.92%, 59.99%, 60.99%, 61.99%, 64.31%, 69.59%, 75.07%, 79.77% and 84.45%. Propolis water extract concentrations of 10%, 12.5%, 15%, 17.5%, 20%, 22.5%, and 25% had anti-inflammatory effects that were not significantly different from the positive control (p>0.05). The 27.5 % and 30% concentrations had a higher percent hemolysis protection value than the positive control (p<0.05).

The impact of using bee pollen in poultry systems

The use of antibiotic growth promoters in poultry production has resulted in the development of drug resistance, and destruction of the normal beneficial intestinal flora. Therefore, the task of poultry industry is to find alternative solutions to ensure safe products. The aim of this review article was to understand the potential use of bee pollen in poultry production system regarding its impact on performance, carcass traits, immunity, bacterial community, and blood parameters. Bee products such as pollen have been used in traditional medicine and have recently appeared as possible feed additives. Bee pollen is considered the most important substance in the hive, as a basic feed for bees. It consists of a mixture of proteins, amino acids, fats, carbohydrates, and multiple vitamins, minerals, and enzymes. The chemical composition of bee pollen depends mainly on the plant species, geographic region, and season of collection. Bee pollen has many uses in human medicine and livestock production. It has been used to improve general health, and may also act as an antibacterial, antifungal, antioxidant, anti-radiation, anti-carcinogenic, anti-inflammatory, hepato- and cardio-protective, and antidiabetic. Dietary supplementation of bee pollen could increase performance parameters as a growth promotor, enhancing carcass quality. In addition, bee pollen can enhance the immune response, reduce the pathogenic bacterial count, and enhance important blood parameters.

Exploring network governance in sustainable beekeeping management in the Mekong subregion and its challenges

This research paper aims to explore a network governance in sustainable apiculture management and identify its challenges to government and non-governmental policy makers. Qualitative data was collected through participant observation during field visits and Focus Group Discussions (FGDs) with regional apiculture management. The research results show that each country in the Mekong subregion has different network governances in supporting a sustainable apiculture management. Some countries have a collaborative network between the government, the civil society, entrepreneurs, and scholars. In contrary, some countries lack a policy framework from the government. This difference becomes challenges for the six governments of the Mekong subregion countries to commonly support the sustainable apiculture management in the subregion. The identified challenges in the paper are: (1) a capacity gap between the six countries of the region; (2) no common policies and regulations that would facilitate local beekeepers’ access to wider regional bee products; (3) no support for inter-regional transport of bees and honey for academic purposes; (4) inadequate native bee species preservation and pesticides use; (5) local beekeepers’ limited access to a regional bee diseases and pesticides use database; and, (6) a lack of regional standards for general honeybee product support.

In-Depth Phytochemical Profile by LC-MS/MS, Mineral Content by ICP-MS, and In-Vitro Antioxidant, Antidiabetic, Antiepilepsy, Anticholinergic, and Antiglaucoma Properties of Bitlis Propolis

Propolis is very significant in terms of its phytochemical content and biological activity among bee products. In this study, the antioxidant activities (total phenolic and flavonoid, Fe3+, Cu2+ (CUPRAC), Fe3+-TPTZ (FRAP) reducing, and DPPH•, ABTS•+ scavenging assays) of propolis collected from the Bitlis province of Türkiye were determined. In addition, the carbonic anhydrase I and II isoenzymes (hCA I and hCA II), α-glycosidase, acetylcholinesterase (AChE), and butyrylcholinesterase (BChE) inhibition activity and phytochemical profile of propolis and mineral content were determined by LC-MS/MS and ICP-MS, respectively. In propolis, 31 phytochemicals were found, and the highest concentration of acacetin (23.604 mg/g) was detected. It is seen that the phytochemicals in propolis provide antioxidant properties. The mineral content was screened for 18 elements and determined to be rich in the elements that make up the salt content. Total phenolic content was 215.14 mg GAE/g, and total flavonoid content was 79.11 mg QE/g. The Fe3+ reduction result was 0.940 (µg/mL), CUPRAC 1.183 (µg/mL), FRAP 0.963 (µg/mL), DPPH• scavenging IC50: 16.7 (µg/mL), and ABTS IC50: 8.01 (µg/mL). hCA I enzyme inhibition results in IC50: 7.19 (µg/mL), hCA II 8.15, AChE 5.17, BChE 7.50, and α-Glycosidase 5.72. As a result of this study, it was determined that Bitlis propolis has high antioxidant properties and a rich phytochemical content. It was also observed that it is an effective enzyme inhibitor against epilepsy, glaucoma, Alzheimer’s, and diabetes, which are important diseases, and it can be evaluated in the treatment of these diseases and drug production.

The health profile of Lithuanian beekeepers and use of bee products for health purposes

Abstract Background There is little research about the health profile and attitude of beekeepers themselves who are the main suppliers of apitherapy products to the general public. The study aims to describe the health profile of Lithuanian bee keepers and identify their attitudes towards use of bee products for health purposes. Methods A cross-sectional survey was carried out from November 2023 to February 2024 among beekeepers in Lithuania. A representative sample of N = 369 (5% margin of error) has been enrolled in the study. A mixed-model approach was used for data collection. Research instrument consisted of a two-part questionnaire covering socio-demographic variables and questions on the use of bee products. Results 369 respondents participated in the study: 73% (n = 270) males and 27% (n = 99) of females. The mean age was 57.8 years (SD = 14.4). Beekeepers assessed their health as good and only 2% assessed it as bad, while the Lithuanian rate is 12%. 95% of the respondents used bee products for health purposes, 5% did not use at all. Large beekeepers (>100 beehives) were more likely not to choose bee products (p < 0.001). No correlation was found between chronic diseases and consumption of bee products, except for diabetes mellitus (p = 0.001). The most common reasons for choosing apitherapy products included respiratory (62%), digestive (31%) diseases, immunity boosting (77%), dermatological conditions (53%). Propolis was pointed out in the survey as being used by 74%. Elder beekeepers (>65 years) were found to be more likely to use propolis (p < 0.001). They were also more likely to use it for prevention (p < 0.001) and in case of toothache (p = 0.001). Conclusions The majority of beekeepers use bee products for health purposes. The most common reasons for consuming honey and other bee products are immunity boosting and colds. It was found that beekeepers over 65 years of age are more likely to use propolis for prevention and toothache treatment. Key messages • Although the consumption of bee products is high among beekeepers, elder generation and owners of smaller apiaries are more likely to use bee products for health purposes. • Chronic diseases are not associated with consumption of bee products, except for beekeepers with diabetes mellitus who do not consume it.

Evaluation of in-house-built pipette-tip micro-solid-phase extraction devices for sample preparation in the analysis of amino compounds by liquid chromatography-tandem mass spectrometry

Amino compounds are of significant interest in dietary, clinical, and quality control fields. Efficient extraction is crucial for comprehensive metabolomics, especially for amino acids and biogenic amines, but traditional solid-phase extraction (SPE) methods are costly and require large solvent volumes. Miniaturized SPE techniques, like pipette-tip micro-solid-phase extraction (PT-µ-SPE), offer promising alternatives by improving throughput and reducing solvent and sorbent usage. This study presents PT-µ-SPE for the screening and quantification of amino compounds in bee products, particularly honey. The method involves derivatization with diethyl ethoxymethylenemalonate (DEEMM) and analysis using liquid chromatography-triple quadrupole mass spectrometry. Silica-based SCX sorbents were effective for a broad range of amino compounds, while WCX sorbents were better for aliphatic amines. The method's extraction efficiency was assessed across sample loading, washing, and elution solution, with recovery rates of 70 - 120% in oat bran, sea buckthorn leaves, and honey extracts. Matrix effects were observed for four amino compounds in honey. Limits of detection (LoD) and quantification (LoQ) ranged from 0.37 to 57 µg L⁻¹ and 1.13 to 174 µg L⁻¹, respectively. Covering 48 amino compounds under different PT-µ-SPE conditions, this method has been applied to several samples, demonstrating accuracy, environmental sustainability, cost-effectiveness, portability, and versatility in amino compound analysis.

Brazilian red propolis synergistically with imipenem modulates immunological parameters and the bactericidal activity of human monocytes against methicillin-resistant Staphylococcus aureus (MRSA).

Propolis is a bee product found all over the globe and has a well-known antibacterial activity. Previous findings of our group revealed that the combination of Brazilian red propolis (BRP) with a lower concentration of imipenem (IPM) exerted a bactericidal action against methicillin-resistant Staphylococcus aureus (MRSA) in vitro. Here, we aimed at investigating the effects of BRP in combination or not with IPM on human monocytes to assess a possible immunomodulatory action. Monocyte metabolic activity was analysed by MTT assay, cytokine production (TNF-α, IL-1β, IL-6, IL-8, and IL-10) by ELISA, and the expression of cell markers (TLR-2, TLR-4, HLA-DR, and CD80) by flow cytometry. The bactericidal activity of monocytes over MRSA was determined by colony-forming units' count. BRP alone or in combination with IPM exerted no cytotoxic effects on monocytes. BRP downregulated TLR-2 expression and inhibited TNF-α, IL-1β, and IL-6 production, while BRP + IPM stimulated these parameters. BPR alone or in combination increased the bactericidal activity similarly to LPS-activated monocytes. Data indicated the potential of BRP as an anti-inflammatory agent increasing the bactericidal activity of monocytes against MRSA. The combination of BRP + IPM exhibited a stimulatory profile that may be potentially useful in treating patients with MRSA infection.

Propolis Extract Attenuates NF-κB Activation and Chronic Kidney Disease Progression in a Rat Model: Potential Surgical Adjuvant?

Background: Chronic kidney disease (CKD) is a global health concern often complicated by cardiovascular diseases like atherosclerosis. Both conditions share an inflammatory pathogenesis, with nuclear factor kappa B (NF-κB) playing a central role. Propolis, a natural bee product with anti-inflammatory properties, has shown potential in mitigating CKD progression. This study aimed to investigate the effects of propolis extract on NF-κB activation in a rat model of CKD, exploring its potential benefits as a surgical adjuvant. Methods: Male white rats (Rattus norvegicus) were divided into three groups: a control group, a CKD group, and a CKD+Propolis group receiving propolis extract (200 mg/kg body weight) daily for 20 days. CKD was induced using the unilateral ureteral obstruction (UUO) method. NF-κB levels were measured weekly using ELISA. Results: Propolis extract significantly reduced NF-κB levels in the CKD+Propolis group compared to the CKD group (p<0.05). This effect was consistently observed across all time points, indicating a sustained reduction in NF-κB activation with propolis treatment. Conclusion: Propolis extract effectively attenuates NF-κB activation in a rat model of CKD, suggesting its potential as an adjunctive therapy for CKD management, particularly in the context of surgical interventions. Further research is needed to elucidate the underlying mechanisms and evaluate its efficacy in human subjects.

Physicochemical and Antibacterial Properties of Nepalese Honey

Nepal has a variety of honey and bee products that are dependent on floral sources available in a particular geographical region. The purpose of this study was to compare the physicochemical and antibacterial properties for the quality analysis of different honey samples. Honey samples were gathered from eight different districts of Nepal, which were assessed for their color, ash content, moisture, electrical conductivity, pH, acidity, formaldehyde content, protein concentration, reducing sugar, total reducing sugar, sucrose content, and antibacterial properties. The color and protein were determined using a colorimeter, ash content using a muffle furnace at 550°C, moisture using a refractometer, and electrical conductivity using a conductivity meter. Acidity, formaldehyde, reducing sugar, total reducing sugar, and sucrose content were determined by the titrimetric method while the antibacterial potential was determined by the agar well diffusion method. The results indicated that six honey samples were dark amber and others were light amber in color. The mean values were found ranging from 18.4+0 to 20.8+0.69% for moisture, 0.05+0.04 to 1.35+0.26% for ash, 0.03+0.01 to 1184+5.26 μs/cm for electrical conductivity, 4.5+0.06 to 7.47 +0.06 for pH, 90 to 137 meq/kg for acidity, 1 to 10 ml/kg for formaldehyde content, 0.28 to 0.73 mg/ml for protein concentration, 51.54% to 69.44% for reducing sugar, 65.35 to 80% for total reducing sugar, and 1.31 to 13.52% for sucrose. Out of the eight honey samples, four were able to show antimicrobial activity against Staphylococcus aureus ATCC 6538 while honey from Sindhupalchowk and Baitadi was also active against S. epidermidis ATCC 12228, and no other samples showed inhibitory activity against Escherichia coli ATCC 8739 and Listeria monocytogenes ATCC 19115. The honey sample from Lamjung was able to exhibit the highest antimicrobial activity against Pseudomonas aeruginosa ATCC 9027 at 1250 mg/ml concentration, while the lowest antimicrobial activity was shown by the sample from Chitwan at 750 mg/ml concentration against S. aureus, thus reflecting the significance of using honey as a natural remedy. This study indicated the essence of quantitative assessment of honey samples in terms of physicochemical parameters to ensure the quality of honey samples.

Enrichment of shortcrust pastry cookies with bee products: polyphenol profile, in vitro bioactive potential, heat-induced compounds content, colour parameters and sensory changes

Bee products, including bee pollen (BP) and bee bread (BB) are natural sources that contain a diverse range of bioactive compounds. The objective of this study was to investigate the potential of BP and BB to enhance the functional properties of shortcrust pastry cookies. The impact on BP and BB on the colour parameters, polyphenolic compounds content, heat-induced compounds content (acrylamide, furfural, 5-hydroxymethylfurfural (HMF)), antioxidant properties, and inhibitory effects against advanced glycation end products (AGEs) formation and acetylcholinesterase (AChE) activity was examine by enriching cookies with 3 and 10% of BP or BB. The incorporation of BP or BB resulted in a notable darkening of the cookies. The spectroscopic and chromatographic analyses revealed that the cookies enriched with bee products exhibited an elevated content of phenolic compounds. The antioxidant activity (AA) of the enriched cookies exhibited an average increase of 2- to 3-fold in the ABTS test and 2-fold in the DPPH test. All cookies exhibited inhibitory potential against AGEs formation, witch inhibitory rates ranging from 10.64 to 46.22% in the BSA-GLU model and 1.75–19.33% in BSA-MGO model. The cookies enriched with 10% BP were characterised by to the highest level of AChE activity inhibition (13.72%). The incorporation of BB and BP resulted in elevated concentration of acrylamide, furfural, and HMF. Our findings suggest that bee products may serve as a valuable addition to food ingredients, significantly enhancing the functional properties of shortcrust pastry cookies. However, further investigation is necessary to address the increased level of heat-induced compounds.

Antimicrobial Activity of Honey and Propolis from Alba County, Romania.

Investigating the quality of bee products obtained across different geographical regions and analyzing their antimicrobial activity is of significant interest to various scientific disciplines. This study focuses on comparing the antimicrobial activity of honey and propolis samples from different areas of Alba County, Romania. The quality parameters of five samples of two types of bee products (honey and propolis) were assessed. Then, the samples were tested to comparatively determine their antimicrobial properties against 12 species of bacteria (Escherichia coli, Salmonella typhimurium, Salmonella enteritidis, Salmonella anatum, Salmonella choleraesuis, Pseudomonas aeruginosa, Pseudomonas fluorescens, Staphylococcus aureus, Staphylococcus epidermidis, Bacillus cereus, Bacillus subtilis, and Listeria monocytogenes) and 7 fungal strains (Candida albicans, Aspergillus niger, Aspergillus flavus, Penicillium chrysogenum, Rhizopus stolonifer, Fusarium oxysporum, and Alternaria alternata). Of the bacterial strains, the most sensitive to the action of honey samples were the two strains of Staphylococcus followed by P. fluorescens. The two strains of Pseudomonas and L. monocytogenes were the most sensitive to the activity of propolis. Of the fungal strains, F. oxysporum was the most sensitive to the actions of both honey and propolis, followed by P. chrysogenum in the case of honey samples and the two Aspergillus strains in the case of propolis. These findings indicate that bee products are rich sources of bioactive compounds exhibiting strong antimicrobial properties and significant potential for the development of new phytopharmaceutical products.

Full-Length Transcriptome Profile of Apis cerana Revealed by Nanopore Sequencing

The Asian honey bee (Apis cerana) plays a crucial role in providing abundant bee products and in maintaining ecological balance. Despite the availability of the genomic sequence of the Asian honey bee, its transcriptomic information remains largely incomplete. To address this issue, here we constructed three pooled RNA samples from the queen, drone, and worker bees of A. cerana and performed full-length RNA sequencing using Nanopore single-molecule sequencing technology. Ultimately, we obtained 160,811 full-length transcript sequences from 19,859 genes, with 141,189 being novel transcripts, of which 130,367 were functionally annotated. We detected 520, 324, and 1823 specifically expressed transcripts in the queen, worker, and drone bees, respectively. Furthermore, we identified 38,799 alternative splicing (AS) events from 5710 genes, 44,243 alternative polyadenylation (APA) sites from 1649 gene loci, 88,187 simple sequence repeats (SSRs), and 17,387 long noncoding RNAs (lncRNAs). Leveraging these transcripts as references, we identified 6672, 7795, and 6804 differentially expressed transcripts (DETs) in comparisons of queen ovaries vs drone testes, worker ovaries vs drone testes, and worker ovaries vs queen ovaries, respectively. Our research results provide a comprehensive set of reference transcript datasets for Apis cerana, offering important sequence information for further exploration of its gene functions.

Enabling biographical repair and recovery through beekeeping

ABSTRACT Beekeeping has a long tradition in Slovenia and other parts of the world. It is often associated with concrete outcomes such as therapeutic bee products; but little is known about its less tangible dimensions connected with human-animal interactions. In this study, interpretive phenomenology was used to explore the meaning making and lived experiences of six beekeepers living with a chronic neurological condition. Participants shared their experiences through interviews which were conducted by a fellow beekeeper-researcher. Reflexive thematic analysis was used to develop two main themes that described a lifelong relationship with beekeeping and changes in times of illness. These included new ways of doing and perceiving the occupation of beekeeping and the enhanced meaning that was developed when faced with health challenges. The participants’ stories showed a gradual path to reconciliation and new normality through occupation, which included both experiences of grief when the bees had to be reprioritised and feelings of joy when they returned to spending time with and caring for the bees, albeit in adapted ways. The findings provide further insights into biographical repair from an occupational perspective and help to situate occupational science in a new geographical context, which may have specific characteristics considering the nature of valued occupations and connections with non-human species.

EFFECTS OF APILARNIL AND QUEEN BEE LARVAE ON LARVAL MORTALITY AND LONGEVITY IN DROSOPHILA MELANOGASTER

The basic mechanisms of ageing and longevity are not yet fully understood. More studies are needed to correlate this situation with functional foods and food supplements that have been used frequently recently. Bee products are in the first place in the use of natural products and food supplements. It has been reported that drone larvae (apilarnil) and queen bee larvae, which have become popular in recent years, support the protection of health due to their high nutritional value, but no studies have been conducted on their life-extending efficacy. For this purpose, the efficacy of these two bee products on life span and mortality was investigated in our study. Apilarnil and queen bee larvae lyophilisates added to Drosophila melanogaster medium at different concentrations (0.5; 1.0; 2.5 and 5.0 mg/ml medium) were studied separately in male and female populations for treatment and control groups. As a result, apilarnil at 5 mg/ml concentration showed the best effect in terms of larval mortality compared to the control group, while the most effective group in terms of mean life span was determined as queen bee larvae with 83.1±3.53 days. In general, both bee products increased the life span of flies in parallel with the increase in concentration in both female and male populations. These results were statistically significant at p

Анализ отношений стабильных изотопов легких элементов в отдельных компонентах мёда

Honey possesses excellent sensory and nutritional properties, which makes it a valuable food ingredient. However, the same qualities make it one of the most often adulterated products in the world. Constant violations of processing technology threaten the beekeeping industry. In this regard, new authenticity criteria are a popular area of honey studies. The article introduces a method for establishing ratios of light stable isotopes in honey. The study featured 36 samples of honey of various geographical origins and botanical profiles, as well as five samples of sugar syrups from various raw materials. The quantitative profiles were obtained using a Delta Advantage V isotope mass spectrometer (USA – Germany) with additional Flash IRMS and Conflo IV modules. The experiment involved the ratios of stable carbon isotopes in honey δ13C (gross) and nitrogen δ15N in its protein fraction, as well as the values of δ13C, δ18O, and δ2H of ethanol isolated from fermented honey. The values of δ13C (gross) and δ13C of honey proteins made it possible to calculate the amount of added sugar of corn and cane origin. Exogenous sugars in the amounts of 6.5% and 18% cane sugar were detected in two samples. Isotope mass spectrometry was able to identify honey samples with exogenous sugars of C4-plant origin. However, the method failed to detect sugar-containing substances from C3-type plants. The δ18O index demonstrated some prospects as an identification criterion for sugars from C3-plants in honey. Nitrogen isotope ratios in honey proteins proved to be an efficient tool for determining honey authenticity and an additional criterion for identifying bee products. The research resulted in a patent (RU2809285C1) for a new method of determining exogenous sugar-containing substances in honey

Comprehensive assessment of mercury contamination in bees, bee products and moss and lichen bags

Twenty-eight beekeepers around Slovakia were included in the research to evaluate the presence of mercury in honeybee bodies and selected bee-related products: bee pollen and honey. The samples were collected in May, June, and July (honeybee bodies only in May and June). During this period, moss and lichen bags for air quality assessment were exposed around the beehives and relative accumulation factor (RAF) was used for its evaluation. Mercury content in evaluated bioindicators was determined using AMA 254 analyser. Percentage of provisional tolerable intake (%PTWI) and target hazard quotient (THQ) were used to determine health risks related to bee pollen and honey consumption. Around the beehives the proportion of landscape structure elements was determined for each sampling locality, using a geographical informational system QGIS. The aim of the study was a comprehensive evaluation of the mercury content in the environment around beehives using several bioindicators and an assessment of the relationship between the presence of mercury pollution and the proportion of landscape structure elements in the vicinity of the beehives. The study also aimed to evaluate the transfer of contaminants between bee bodies and bee-related products and the health risks resulting from their consumption.

Chrysin Enhances Anti-Cancer Activity of Jurkat T Cell and NK-92 Cells Against Human Breast Cancer Cell Lines.

Chrysin, a naturally occurring flavonoid in plant and bee products, demonstrates notable biological activities, including anti-cancer effects. These properties are partially attributed to its capability to activate immune cells. This study focused on exploring the immunomodulatory potential of chrysin on NK-92 and Jurkat-T cells targeting breast cancer cells (BCC). Chrysin leads to activation of NK-92 and T cells facilitated by the addition of human recombinant IL-2 and PHA-M. The anti-cancer efficacy of chrysin on these immune cells was evaluated in a co-culture setup with EGF-stimulated MCF-7 and MDA-MB-231 cells. Findings revealed that chrysin notably increased the cytotoxicity of NK-92 and T cells towards MCF-7 and MDA-MB-231 cells, with the most significant impact observed on MCF-7 cells (20 %). The activation of NK-92 cells, marked by increased IFN-γ production and CD56 expression, correlated with enhanced secretion of cytokines. Additionally, the activation of these cells against BCC was linked with elevated levels of granzyme-B, TNF-α, and nitric oxide (NO). Similarly, the cytotoxic activation of Jurkat-T cells against BCC was characterized by increased production of granzyme-B, IL-2, and IFN-γ. Consequently, these results support the hypothesis that chrysin significantly contributes to the activation and functional enhancement of NK-92 and T-cells against two distinct BCC lines.

Efficacy of bee pollen and beebread against Salmonella typhimurium in BALB/c mice

The present work evaluate the antibacterial and antioxidant potential of bee pollen and beebread against the toxic changes induced by Salmonella typhimurium in BALB/c mice. The experiment was divided into six groups as; Gp1 was normal, Gp2 was infected with Salmonella enterica serovar Typhimurium at 2×104 CFU, Gp3 and Gp5 were administrated with bee pollen and beebread of Helianthus annus crop alone at 250mg kg-1 bw respectively; Gp4 and Gp6 were with S. typhimurium and bee pollen and beebread H. annus at 250mg kg-1 bw respectively. Different hematological and oxidative stress parameters were assessed in animals. It has been observed that Gp2 showed alteration in the level of all tested parameters as compared to the Gp1, which indicated the toxicity induced by bacteria, but after the treatment with bee pollen and beebread as in Gp4 and 6, their level ameliorated to near normal, which showed the effectiveness of the tested bee products against bacteria.

APITHERAPY AND APPLICATIONS IN VETERINARY MEDICINE

The use of bees and bee products for therapeutic purposes in human and veterinary medicine is called apitherapy. Natural products have been used throughout human history to protect against and treat diseases. In recent years, the emergence of drug resistance and the occurrence of adverse effects associated with the indiscriminate and irregular use of pharmacological agents have prompted humanity to pursue alternative solutions. One of the most significant solutions is the administration of bee products. The use of bee products in apitherapy applications includes honey, bee venom, pollen, propolis, beeswax, royal jelly, perga and apilarnil (bee larvae). In general, apitherapy products with a wide range of indications are widely used in various system diseases and some dermatologic problems and various effects of these products such as antibacterial, antifungal, antiviral, antioxidant, anticarcinogenic, anti-inflammatory, antidiabetic and immunomodulatory effects in vitro and in vivo have been investigated in many different studies. Apitherapy is less common in veterinary practice than in human medicine. Additionally, bee products are employed in the treatment of other animal diseases, including gastrointestinal disorders, otitis, sinusitis, ophthalmic conditions, dermatological disorders, and skin care. Additionally, bee products are employed as food supplements for animals. The most prevalent additive in animal food is bee pollen. It has been demonstrated to promote growth, reduce mortality and prevent morbidity. Apitherapy has gained importance in the field of veterinary medicine in recent years in order to prevent both human health and economic losses, especially in the treatment of animals consumed as food.